Abstract
Background: While various orthodontic appliances were designed to manage the anteroposterior and vertical discrepancy, miniscrew was one of the powerful appliances and was widely utilized as anchorage to treatment the anteroposterior relationship. Method and Result: In the study we treated the severe Class Ⅱ skeletal discrepancy subject with protrude upper incisors and mandibular hypoplasia by the vertical control with the miniscrew. After two years treatment, all the objectives were achieved. The skeletal Class Ⅱ discrepancy was improved (ANB 6.3), the protrude upper incisors were treated (U1 angulation 92.8, U1-L1 120.7) and the occlusive plan was leveled (Occ Plane 8.2). Class Ⅰ molars and canines relationship were obtained. Conclusion: The vertical control was vital for the correction of anteroposterior discrepancy. The anteroposterior, vertical and transverse dimension and the time, especially the long term of post-treatment stability, interacts with each other.
Highlights
The logical approach to the diagnosis and treatment of orthodontic cases is considered as a four dimensions issue which includes the diagnose, designing and treatment for the anteroposterior discrepancy, vertical discrepancy, and transverse discrepancy, as well as the consideration for time which refers to the treatment time and refers to the long term of post-treatment stability
The vertical control was vital for the correction of anteroposterior discrepancy
We showed that the anteroposterior discrepancy of the patient was treated by the vertical control
Summary
The logical approach to the diagnosis and treatment of orthodontic cases is considered as a four dimensions issue which includes the diagnose, designing and treatment for the anteroposterior discrepancy, vertical discrepancy, and transverse discrepancy, as well as the consideration for time which refers to the treatment time and refers to the long term of post-treatment stability. Various orthodontic appliances were designed to manage the anteroposterior and vertical discrepancy, such as miniscrew, Forsus, lingual orthodontic appliance, headgear and so on [1,2,3,4,5,6]. While various orthodontic appliances were designed to manage the anteroposterior and vertical discrepancy, miniscrew was one of the powerful appliances and was widely utilized as anchorage to treatment the anteroposterior relationship. Method and Result: In the study we treated the severe Class II skeletal discrepancy subject with protrude upper incisors and mandibular hypoplasia by the vertical control with the miniscrew. The skeletal Class II discrepancy was improved (ANB 6.3), the protrude upper incisors were treated (U1 angulation 92.8, U1-L1 120.7) and the occlusive plan was leveled (Occ Plane 8.2).
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